Uniphasic Blanching of the Fingers, Abnormal Capillaroscopy in Nonsymptomatic Digits, and Autoantibodies: Expanding Options to Increase the Level of Suspicion of Connective Tissue Diseases beyond the Classification of Raynaud’s Phenomenon

Table 2

Univariate analysis of primary RP versus RP secondary to suspected connective tissue disease. All the variables included as mandatory in the classification criteria of primary RP (i.e., ANA and capillaroscopy that must be negative) were excluded from the analysis.

Primary RP versus RP secondary to suspected connective tissue disease
	OR (95% CI)	value
RP duration (years)	0.999 (0.995–1.003)	0.688
Number of fingers affected by RP	1.031 (0.846–1.255)	0.764
Thumb affected by RP	1.477 (0.535–4.078)	0.452
Number of RP colour phases	1.845 (0.864–3.94)	0.114
VAS pain	0.996 (0.975–1.018)	0.742
VAS severity	0.997 (0.978–1.016)	0.756
VAS discomfort	0.964 (0.821–1.133)	0.659

RP: Raynaud phenomenon; OR: odds ratio; CI: confidence interval; VAS: visual analogue scale.